The　stabilities　of　phthalocyaninatometals　are　reduced　seriously　by　the　substitution　of　bulky　alkoxyl　substituents.　In　the　toluene,　tetra-alpha-(2,2,4-trimethyl-3-pentoxy)phthalocyaninatometals　can　be　decomposed　by　the　benzoyl　peroxide,　and　the　order　of　decomposition　rate　sorted　with　the　center　metals　is　Fe　＞　Co　＞　Cu　＞　Ni　＞　Pd,　which　showed　a　consistency　with　the　axial　coordination　abilities　of　the　center　metals.　(C)　2007　Elsevier　B.V.　All　rights　reserved.